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Cited by 775

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P-TEN, the tumor suppressor from human chromosome 10q23, is a dual-specificity phosphatase

Open access
Myers, Michael P., Stolarov, Javor P., Eng, Charis, Li, Jing, Wang, Steven I., Wigler, Michael H., Parsons, Ramon, Tonks, Nicholas K.·1997·Proceedings of the National Academy of Sciences

Abstract

Protein tyrosine phosphatases (PTPs) have long been thought to play a role in tumor suppression due to their ability to antagonize the growth promoting protein tyrosine kinases. Recently, a candidate tumor suppressor from 10q23, termed P-TEN, was isolated, and sequence homology was demonstrated with members of the PTP family, as well as the cytoskeletal protein tensin. Here we show that recombinant P-TEN dephosphorylated protein and peptide substrates phosphorylated on serine, threonine, and tyrosine residues, indicating that P-TEN is a dual-specificity phosphatase. In addition, P-TEN exhibited a high degree of substrate specificity, showing selectivity for extremely acidic substrates in vitro . Furthermore, we demonstrate that mutations in P-TEN, identified from primary tumors, tumor cells lines, and a patient with Bannayan–Zonana syndrome, resulted in the ablation of phosphatase activity, demonstrating that enzymatic activity of P-TEN is necessary for its ability to function as a tumor suppressor.

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Metadata

Authors
Myers, M. P., Stolarov, J. P., Eng, C., Li, J., Wang, S. I., Wigler, M. H., Parsons, R., & Tonks, N. K.
Venue
Proceedings of the National Academy of Sciences
Published
1997-08-19
Volume
94
Issue
17
Pages
9052-9057
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1977416006
Cited by
775
References
2
FWCI
16.31
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: P-TEN, the tumor suppressor from human chromosome 10q23, is a dual-specificity phosphatase. https://app.cochat.ai/papers/10.1073/pnas.94.17.9052
The paper
Myers, M. P., Stolarov, J. P., Eng, C., Li, J., Wang, S. I., Wigler, M. H., Parsons, R., & Tonks, N. K. (1997). P-TEN, the tumor suppressor from human chromosome 10q23, is a dual-specificity phosphatase. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.94.17.9052

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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